Solveeit Logo
Login

Question

Chemistry Question on Thermodynamics

Absolute values of internal energy of substances can not be determined. It is impossible to determine exact values of constituent energies of the substances.

A

If both assertion and reason are true and reason is a correct explanation of the assertion

B

If both the assertion and reason are true but the reason is not a correct explanation of the assertion

C

If the assertion is true but the reason is false

D

If both the assertion and reason are false

Answer

If both assertion and reason are true and reason is a correct explanation of the assertion

Explanation

Solution

Internal energy is given by: E=Etranslational +Erotaional +Evibrational +Ebonding +Eelectronic E=E_{\text {translational }}+E_{\text {rotaional }}+E_{\text {vibrational }}+E_{\text {bonding }}+E_{\text {electronic }} Accurate measurement of some forms of energy which contribute to the absolute value of internal energy for a given substance in a given state is impossible. So difference of the initial state and final state is calculated and is denoted by ΔE=Ef−Ei\Delta E=E_{f}-E_{i}